近53年青海省贵南县雷暴气候特征分析  

Analysis on the Climate Characteristics of Thunderstorm in Guinan County,Qinghai Province in Recent 53 Years

作　　者：聂永喜 聂宇 NIE Yong-xi;NIE Yu(Guinan County Meteorogical Bureau,Guinan,Qinghai 813199;Haibei Tibetan Autonomous Prefecture Mete-orological Bureau,Haiyan,Qinghai 812299)

机构地区：[1]青海省贵南县气象局,青海贵南813199 [2]青海省海北藏族自治州气象局,青海海晏812299

出　　处：《安徽农业科学》2018年第17期168-169,178,共3页Journal of Anhui Agricultural Sciences

摘　　要：利用青海省贵南县气象站观测的1961—2013年雷暴资料,采用气候倾向率、绝对变率和M-K检验等统计方法分析雷暴气候特征。结果表明,近53年贵南县年平均雷暴日数36.96 d,不属于多雷区,雷暴主要出现在6—8月(汛期),占全年的68.80%;近53年来贵南县雷暴日数呈不显著的减少趋势,雷暴初日(终日)呈不显著的推迟(提前)趋势,平均雷暴期呈显著缩短趋势;突变分析表明,年雷暴日数在1969年发生了由多到少的突变。Using the thunderstorm data observed from the meteorological station in Guinan County,Qinghai Province during 1961-2013,climatic characteristics of thunderstorms were analyzed using statistical methods such as climatic bias rate,absolute variability and M-K test. The results showed that the average thunderstorm days in Guinan County were 36. 96 days,which was not a multi-mined area. The thunderstorm occurred mainly in June-August（ flood season）,accounting for 68. 80% of the whole year. In the past 53 years,the number of thunderstorm days in Guinan County showed a nonsignificant decrease trend,the beginning day of the thunderstorm（ end of day） showed an insignificant delay（ advance） trend,the average thunderstorm period showed a significant decrease trend. Mutation analysis showed that the number of thunderstorm days in 1969 had mutation from more to less.

关 键 词：雷暴 气候特征 突变分析 贵南县 

分 类 号：S161[农业科学—农业气象学]